Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already indicate destructive=true and readOnly=false. The description adds the concrete behavioral outcome that the URL stops serving, which is useful. It does not explicitly state whether the underlying datafile is deleted, but it does not contradict the annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single concise sentence that directly conveys the action and result. No unnecessary words or details are present.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple unpublish action, the description, parameter, and annotations provide enough context for an agent to understand the purpose and expected effect. It does not detail edge cases or error conditions, but those are not essential for this tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The parameter datafile_id has a description that essentially restates its name. While the meaning is clear and the parameter is required, the description does not add meaningful extra semantics beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states a specific action ('Pull a published datafile off the CDN') and the expected outcome ('its URL stops serving'). It is easily distinguished from sibling tools like unpublish_app or unpublish_dynamic_endpoint.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies the tool should be used on a published datafile, but it does not explicitly mention when to prefer it over alternatives such as delete_datafile or publish_datafile. The usage context is understandable but not fully explicit.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.